INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.45' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 42.655969] ================================================================== [ 42.663385] BUG: KMSAN: uninit-value in gf128mul_4k_lle+0x2b6/0x320 [ 42.669771] CPU: 0 PID: 4464 Comm: syzkaller799785 Not tainted 4.16.0+ #87 [ 42.676758] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.686093] Call Trace: [ 42.688666] dump_stack+0x185/0x1d0 [ 42.692279] ? gf128mul_4k_lle+0x2b6/0x320 [ 42.696493] kmsan_report+0x142/0x240 [ 42.700274] __msan_warning_32+0x6c/0xb0 [ 42.704316] gf128mul_4k_lle+0x2b6/0x320 [ 42.708357] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 42.713702] ? __crypto_xor+0x1608/0x16b0 [ 42.717837] ghash_update+0xa26/0x1160 [ 42.721709] ? ghash_init+0x50/0x50 [ 42.725314] shash_async_update+0x290/0x360 [ 42.729615] ? shash_async_init+0x270/0x270 [ 42.733917] gcm_hash+0x8b5/0x24a0 [ 42.737442] crypto_gcm_encrypt+0xa13/0xaf0 [ 42.741753] ? crypto_gcm_setauthsize+0xc0/0xc0 [ 42.746417] big_key_crypt+0x73d/0x780 [ 42.750288] big_key_preparse+0x3df/0xec0 [ 42.754417] ? kdf_ctr+0xc00/0xc00 [ 42.757936] key_create_or_update+0x7a8/0x1a40 [ 42.762500] SYSC_add_key+0x6c2/0x960 [ 42.766284] ? kmsan_set_origin_inline+0x6b/0x120 [ 42.771115] SyS_add_key+0x77/0xa0 [ 42.774640] do_syscall_64+0x309/0x430 [ 42.778506] ? keyring_detect_cycle_iterator+0x110/0x110 [ 42.783939] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.789107] RIP: 0033:0x43fcd9 [ 42.792273] RSP: 002b:00007fff1f67b858 EFLAGS: 00000207 ORIG_RAX: 00000000000000f8 [ 42.799958] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 42.807206] RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000020000100 [ 42.814453] RBP: 00000000006ca018 R08: 00000000fffffffc R09: 00000000004002c8 [ 42.821788] R10: 00000000000004d1 R11: 0000000000000207 R12: 0000000000401600 [ 42.829035] R13: 0000000000401690 R14: 0000000000000000 R15: 0000000000000000 [ 42.836287] [ 42.837888] Uninit was stored to memory at: [ 42.842190] kmsan_internal_chain_origin+0x12b/0x210 [ 42.847272] __msan_chain_origin+0x69/0xc0 [ 42.851487] __crypto_xor+0x23c/0x16b0 [ 42.855359] ghash_update+0x9e4/0x1160 [ 42.859233] shash_async_update+0x290/0x360 [ 42.863535] gcm_hash+0x8b5/0x24a0 [ 42.867054] crypto_gcm_encrypt+0xa13/0xaf0 [ 42.871353] big_key_crypt+0x73d/0x780 [ 42.875222] big_key_preparse+0x3df/0xec0 [ 42.879346] key_create_or_update+0x7a8/0x1a40 [ 42.883908] SYSC_add_key+0x6c2/0x960 [ 42.887690] SyS_add_key+0x77/0xa0 [ 42.891211] do_syscall_64+0x309/0x430 [ 42.895077] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.900238] Uninit was stored to memory at: [ 42.904549] kmsan_internal_chain_origin+0x12b/0x210 [ 42.909630] __msan_chain_origin+0x69/0xc0 [ 42.913858] __crypto_xor+0x23c/0x16b0 [ 42.917724] crypto_ctr_crypt_inplace+0x29a/0x3a0 [ 42.922546] crypto_ctr_crypt+0x54c/0x7d0 [ 42.926671] skcipher_encrypt_blkcipher+0x222/0x320 [ 42.931667] crypto_gcm_encrypt+0x53e/0xaf0 [ 42.935979] big_key_crypt+0x73d/0x780 [ 42.939849] big_key_preparse+0x3df/0xec0 [ 42.943973] key_create_or_update+0x7a8/0x1a40 [ 42.948545] SYSC_add_key+0x6c2/0x960 [ 42.952325] SyS_add_key+0x77/0xa0 [ 42.955840] do_syscall_64+0x309/0x430 [ 42.959709] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 42.964873] Uninit was created at: [ 42.968392] kmsan_alloc_meta_for_pages+0x161/0x3a0 [ 42.973391] kmsan_alloc_page+0x82/0xe0 [ 42.977366] __alloc_pages_nodemask+0xf5b/0x5dc0 [ 42.982100] alloc_pages_current+0x6b5/0x970 [ 42.986489] big_key_alloc_buffer+0x241/0xa00 [ 42.990971] big_key_preparse+0x20a/0xec0 [ 42.995106] key_create_or_update+0x7a8/0x1a40 [ 42.999673] SYSC_add_key+0x6c2/0x960 [ 43.003453] SyS_add_key+0x77/0xa0 [ 43.006971] do_syscall_64+0x309/0x430 [ 43.010840] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.016008] ================================================================== [ 43.023351] Disabling lock debugging due to kernel taint [ 43.028779] Kernel panic - not syncing: panic_on_warn set ... [ 43.028779] [ 43.036134] CPU: 0 PID: 4464 Comm: syzkaller799785 Tainted: G B 4.16.0+ #87 [ 43.044434] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.053774] Call Trace: [ 43.056345] dump_stack+0x185/0x1d0 [ 43.059951] panic+0x39d/0x940 [ 43.063151] ? gf128mul_4k_lle+0x2b6/0x320 [ 43.067379] kmsan_report+0x238/0x240 [ 43.071160] __msan_warning_32+0x6c/0xb0 [ 43.075211] gf128mul_4k_lle+0x2b6/0x320 [ 43.079254] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 43.084594] ? __crypto_xor+0x1608/0x16b0 [ 43.088723] ghash_update+0xa26/0x1160 [ 43.092601] ? ghash_init+0x50/0x50 [ 43.096205] shash_async_update+0x290/0x360 [ 43.100510] ? shash_async_init+0x270/0x270 [ 43.104813] gcm_hash+0x8b5/0x24a0 [ 43.108333] crypto_gcm_encrypt+0xa13/0xaf0 [ 43.112637] ? crypto_gcm_setauthsize+0xc0/0xc0 [ 43.117287] big_key_crypt+0x73d/0x780 [ 43.121156] big_key_preparse+0x3df/0xec0 [ 43.125285] ? kdf_ctr+0xc00/0xc00 [ 43.128804] key_create_or_update+0x7a8/0x1a40 [ 43.133370] SYSC_add_key+0x6c2/0x960 [ 43.137158] ? kmsan_set_origin_inline+0x6b/0x120 [ 43.141980] SyS_add_key+0x77/0xa0 [ 43.145501] do_syscall_64+0x309/0x430 [ 43.149368] ? keyring_detect_cycle_iterator+0x110/0x110 [ 43.154802] entry_SYSCALL_64_after_hwframe+0x3d/0xa2 [ 43.159981] RIP: 0033:0x43fcd9 [ 43.163158] RSP: 002b:00007fff1f67b858 EFLAGS: 00000207 ORIG_RAX: 00000000000000f8 [ 43.170844] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcd9 [ 43.178094] RDX: 0000000020000180 RSI: 0000000020000140 RDI: 0000000020000100 [ 43.185343] RBP: 00000000006ca018 R08: 00000000fffffffc R09: 00000000004002c8 [ 43.192590] R10: 00000000000004d1 R11: 0000000000000207 R12: 0000000000401600 [ 43.199859] R13: 0000000000401690 R14: 0000000000000000 R15: 0000000000000000 [ 43.207595] Dumping ftrace buffer: [ 43.211124] (ftrace buffer empty) [ 43.214812] Kernel Offset: disabled [ 43.218425] Rebooting in 86400 seconds..